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United States Patent | 5,057,484 |
Shiota ,   et al. | October 15, 1991 |
A single crystal oxide superconductor and the method of producing the same. One face of a substrate is coated with an oxide superconductor for forming an oxide superconductor layer. Then, the oxide superconductor layer is heated so that the oxide superconductor has a single crystalline structure.
Inventors: | Shiota; Takao (Sakura, JP); Hidaka; Hiroshi (Tsukuba, JP); Takahashi; Koichi (Funabashi, JP); Sato; Masahiro (Yotsukaido, JP); Fukuda; Osamu (Narashino, JP) |
Assignee: | Fujikura Ltd. (Tokyo, JP) |
Appl. No.: | 188937 |
Filed: | May 2, 1988 |
May 01, 1987[JP] | 62-108051 | |
May 01, 1987[JP] | 62-108052 | |
May 08, 1987[JP] | 62-111784 | |
May 25, 1987[JP] | 62-127335 |
Current U.S. Class: | 505/125; 428/426; 428/457; 428/688; 428/689; 428/698; 428/699; 428/700; 428/901; 428/930; 505/183; 505/232; 505/235; 505/236; 505/237; 505/238; 505/434; 505/447; 505/470; 505/473; 505/475; 505/701; 505/702; 505/703; 505/704 |
Intern'l Class: | B32B 009/00 |
Field of Search: | 428/426,457,688,689,698,699,700,901,930 505/1,701-704 |
Foreign Patent Documents | |||
59-68702 | Apr., 1984 | JP. | |
59-68701 | Apr., 1988 | JP. |
Adachi et al., Jpn. J. Appl. Phys., 18(8):1637-38 (1979). Adachi et al., Jpn. J. Appl. Phys., 18(1):193-94 (1979). Adachi et al., Jpn. J. Appl. Phys., 17(11):2053-54 (1978). Appl. Phys. Letters, 51(25), Dec. 21, 1987, Chien et al., pp. 2155-2157, Effect of Noble Metal Buffer Layers on SC YBa.sub.2 Cu.sub.3 O.sub.7 Thin Films. Journ. Crys. Growth, 85(1987), 615-618, Thin Film Growth of YBa.sub.2 Cu.sub.3 O.sub.x from Nitrate Solutions, Heary et al. Jap. Journ. Appl. Physics, vol. 26, No. 5, May, 1987, pp. L763-L765, Some Probs. in Prep. of SC Oxide Films on Ceramic Substrate, Koinuma et al. |
TABLE 1 ______________________________________ Com. Com. Ex. 1 Ex. 2 Ex. 1 Ex. 2 ______________________________________ Heat cycle test (cooling >200 >200 105 105 from room temperature to temperature of liquid nitrogen) Bending Test curvature of radius (mm) 100 825 200 80 >1000 -- 200 -- 60 489 190 60 60 40 26 10 4 4 20 5 1 1 1 ______________________________________